Cannabis Bricks: The Use of Hemp in the Construction Industry

Cannabis Bricks: The Use of Hemp in the Construction Industry

Hemp clothing, paper, and food is widespread all over the world. However, hemp helps in construction too. As more building projects are opting for greener construction materials, hemp is making headway at becoming one of the best choices for the construction industry.

How is Hemp Used in Construction?

Hemp is good enough in a variety of ways in the construction industry. One of the most common applications is hempcrete, which is a mixture of hemp hurd, lime, and water. Hempcrete asissts in creating walls, insulation, and other building materials. It’s lightweight and has good thermal insulation properties, making it an ideal choice for eco-friendly construction.

Hemp wood products is another way of hemp using. Hemp can also be used to create fiberboards, which are used in place of traditional particle boards. These fiberboards are stronger and more durable than particle boards, making them an excellent choice for flooring, countertops, and cabinetry.

Bio-composites are one more way of using hemp in construction. These composites are made by combining hemp fibers with other natural fibers, such as bamboo or straw. Bio-composites are helping to create flooring, furniture, and other decorative elements.

How is Hempcrete Made?

The woody inner core of the hemp plant called hurd, with lime and water. The mixture is poured into a form and left to dry just like traditional concrete. As the hempcrete dries, it becomes hard and durable.

The use of Hempcrete is becoming more popular as an alternative building material due to its sustainability and efficiency. It’s possible to build entire homes with hempcrete. One acre of hemp can build a small home. This is because hempcrete requires less material than traditional building materials, and it’s less dense, making it lighter and easier to work with.

The Pros and Cons of Hempcrete

Like any building material, hempcrete has its pros and cons. Here is a look at a few of them.


  1. Sustainable: hemp is a renewable resource and grows in a variety of climates. The production of hempcrete is less harmful to the environment than the production of traditional concrete and other building materials;
  2. Non-toxic: free of harmful chemicals. This makes it a healthier choice for both builders and occupants of the building;
  3. Good insulation: an effective insulator, reducing heating and cooling costs;
  1. Fire resistance: has natural fire-resistant properties due to its low density and high thermal resistance. This makes it a safer and more sustainable option for homes and other structures.


  1. Cost: currently more expensive than other construction materials. There are fewer manufacturers and suppliers;
  2. Drying time: takes longer to dry than traditional concrete. This can slow down the construction process;
  3. Lack of familiarity: hempcrete is still a relatively new building material, so many contractors and builders may not be familiar with its properties and uses. This lack of familiarity could lead to hesitation or resistance to using hempcrete in construction projects, even though it has proven to be a viable and sustainable alternative.

Can Hempcrete Replace Concrete?

Hempcrete is just as strong as concrete and even grows stronger over time. This makes it a contender to replace concrete as contractors become more familiar with it. The pros of using hempcrete outweigh its cons, which include higher costs and slower drying times. Hempcrete has the added benefit of sequestering carbon, which means it can help reduce carbon emissions. This is because the lime used in hempcrete absorbs carbon dioxide from the atmosphere as it dries.

As the construction industry continues to embrace sustainable building practices, it’s evident that hempcrete can replace concrete as a durable and reliable building material. We are likely to see an increasing demand for the use of hempcrete in building and construction projects.

Hemp is a versatile and multipurpose plant. In the construction industry, hemp has proven to be a sustainable and eco-friendly alternative to classic construction supplies.  Materials like hempcrete, fiberboards, and bio-composites are just a few examples of how hemp helps in construction. As more people become aware of the benefits of hemp and the need for sustainable building practices, we’ll likely see an increase in the use of hempcrete for construction purposes.


  1. Use of technical hemp in the construction industry
  2. The story of the first hempcrete builders in Canada

Related Articles